Abridged from Seismicity of the United States, 1568-1989 (Revised), by Carl W. Stover and Jerry L. Coffman, U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, Washington: 1993, and Significant Earthquakes of the World.

Significant Earthquakes of the World

Earthquakes of magnitude 6.5 or greater or ones that caused fatalities, injuries or substantial damage.